Sweating is often associated with heat. And it’s true — you sweat when exposed to high temperatures to help cool down. As sweat droplets evaporate from your skin, they take body heat away with it, producing a cooling effect.

But why do some people sweat like a faucet in the heat while others seem to glisten?

Temperature alone doesn’t influence how much you sweat or where. Here are 6 underlying factors behind your sweat:

1. Physical Fitness

Your body temperature spikes when you're active, so the higher the intensity, the more you sweat. Still, two people of similar size can complete the same workout and sweat totally differently.

As you build endurance, your body becomes more adept at sweating to keep you cool. Studies show athletes sweat sooner and more heavily than untrained people because they have a higher maximum oxygen uptake — a measure of cardiovascular fitness and aerobic endurance.

2. DNA 

Why do some people sweat more in certain areas than others? Much has to do with your DNA (or predisposition to sweating). Some people start sweating in a particular area — like their armpits or feet — because those glands react to the brain's signal first. Hyperhidrosis (excessive sweating) is also a hereditary condition influenced by your genes.

3. Body Weight

Leaner people tend to sweat more efficiently and handle heat better than overweight individuals. Because fat acts as an insulator, people with excess fat may feel hotter, sweat more profusely and take longer to cool down than a leaner person .

4. Distribution of Sweat Glands

The placement of your sweat glands also shapes how you sweat. Your body contains roughly 2 to 5 million sweat glands located all across the body, which consist of two types: eccrine & apocrine.

Eccrine glands reside in pores and produce odorless sweat that is composed of salt and water to help cool the skin. Apocrine glands typically end in hair follicles (rather than pores) and secrete a milky fluid that becomes odorous when mixed with bacteria on the skin. If you sweat excessively in one particular area, you could have a higher concentration of eccrine glands there.

5. Sex

Does being a man or woman really affect how much you sweat? Studies say yes. Men’s sweat glands tend to be more active than women’s, so they sweat more. And physical endurance only intensifies the results, meaning fit men sweat markedly more than untrained or unfit women and dissipate heat better.

6. Acclimatization

Known as the process of adjusting to environmental temperatures, this mechanism largely influences how much you sweat. When you regularly spend time in the heat, you become more acclimated to the temperature and sweat more efficiently.

The ability to sweat is an advantageous trait that keeps you from overheating during a grueling workout. But sweating excessively and spontaneously — regardless of the temperature or physical activity — can take an enormous toll on your life.

Although how much you sweat hinges on biological factors such as DNA, sex and the location of your sweat glands, that doesn’t make you beholden to excessive sweating. There are steps you can take to defy your gene pool and appear dry as a desert.

We designed Thompson Tees to completely absorb sweat while allowing it to evaporate. The result: no embarrassing underarm wet marks or yellow stains. If you’re looking for a solution to underarm sweat, we encourage you to try a Thompson Tee risk-free. Wear it, wash it, and if it doesn’t totally block your underarm sweat, we’ll gladly take it back.

What other helpful tips do you have for controlling sweat?